Obviously I'm missing something here....

[ffutures]

Here's the description of a Toslink fibre optics cable from SVP's site

This fiber optic TOSLINK cable connects audio/video components that have digital optical audio jacks at each end.

Connectors: Gold plated, 99.99% OFC (Oxygen Free Copper)

What is TOSLINK? TOSLINK cables are fibre optic cables that carry a digital audio data signal in the form of light pulses as opposed to the usual electricity signal carried by wire cables. This eliminates the interference to which wire cables are susceptable.

Digital audio inputs and/or outputs are available on many newer Dolby Digital (Dolby 5.1, 6.1, AC3, Prologic, etc) and DTS surround sound receivers, DVD players, CD players, minidisk players and recorders, MP3 and DAT recorders, professional Audio Cards for Computer Digital Audio workstations, Outboard AD/DA Converters and satellite dish receivers. Compatible with S/PDIF, ADAT's, DAW's and Dolby Digital/DTS audio devices using the TOSLINK interface.

I'm sure this is a stupid question, but can anyone suggest any reason why it should be considered worthwhile gold plating optical connectors?